Brand: AEG
Category: Power Supply
Document Type: Manual
Language: EN
Manual for PROTECT 1.100/1.150/1.200
Uploaded: April 20, 2026, 8:03 p.m.
Manual Publish Date: 2007-06-25
Warranty Information
Warranty does not apply for damage caused by non-compliance with these instructions.
PROTECT 1. UPS Operation Summary
This UPS is designed for essential loads in data centres, servers, and network components. It features:
- Mains filter with overvoltage protection.
- Rectifier section with PFC logic.
- Separate battery charger.
- IGBT inverter for continuous AC supply.
- Automatic electronic bypass (SBS) for redundancy.
- Manual bypass for maintenance.
- Digital signal processor-based control unit.
It offers parallel operation with n+x technology for increased reliability and power. The UPS connects between the utility mains and loads, providing uninterrupted power from the inverter, drawing from the battery during mains faults. The automatic bypass enhances reliability, and the manual bypass ensures uninterrupted supply during maintenance.
Troubleshooting and error codes
| Message / display | Cause | Solution |
|---|---|---|
| No display, no acoustic signal although system is connected to the mains current supply. | Mains and/or battery voltage not in tolerance range, poss. totally discharged battery. | Check mains connection again. Check the back-up fuse and the mains input miniature circuit breaker as well. |
| Mains OK, but UPS does not switch to bypass | Position Mains input use is in "OFF" position | Switch mains input miniature circuit breaker to "ON" |
| "Line" LED flashes and "Battery" LED lights up | Mains voltage and/or mains frequency are outside of tolerance | Check the mains (voltage, frequency) |
| "Inverter" LED and "Battery" LED light up. The acoustic signal sounds every 4 seconds (operating states 7-10). | Mains voltage supply interrupted. Automatic switchover to battery mode. | Try to re-establish the mains voltage (poss. fuse triggered in the subdistribution?).When the acoustic signal sounds every second, the battery is almost completely discharged. Carry out a system shutdown of your IT equipment at this point in time at the latest. |
| "Inverter" LED and "Battery" LED light up. The acoustic signal sounds every second (operating state no. 6). | Overload of the UPS System. | Immediately reduce the capacity utilisation of the UPS by disconnecting part of your loads. |
| "Fault" LED lights up, warning signal sounds twice per second (error descriptions no. 12/13). | Mains and/or battery voltage not in tolerance range, poss. totally discharged battery. | Check mains connection again. Check the back-up fuse and the mains input miniature circuit breaker as well. |
| Duration of the emergency power supply shorter than setpoint. | Batteries not completely charged / batteries aged or faulty. | Charge the batteries for at least the recharging time acc. to chapter 2.3, and check their capacity. If the problem remains, contact your dealer. |
| "Line" LED and "Fault" LED light up, continuous warning signal (error description no. 17). | Switch-off due to UPS internal overtemperature detection | Make sure that no overload is present, the UPS fans are not blocked and the ambient temperature is in the tolerance range. Wait for 10 min. cooling down phase, then switch on again. |
| Error description no. 19 | Switch-off due to short-circuit in UPS output | Correct short-circuit. Switch UPS on again, connect loads one after the other again. |
| "Fault" LED lights up, "Battery" LED flashes, warning signal sounds once per second (error description 21). | Fault in DC circuit or battery system faulty. | Notify dealer! |
| "Fault" LED lights up, continuous warning signal. | Fault in the UPS. | Notify dealer! |